<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>web worker 大文件切片上传</title>

    <style>
      body {
        margin: 0;
      }
    </style>
  </head>
  <body>
    <div id="app"></div>
  </body>
</html>
